Texas Instruments TPS3106E16DBVTG4

Overview

TPS3106E16DBVTG4 from Texas Instruments is an ultralow-quiescent-current voltage supervisor IC with dual reset outputs (RSTVDD and RSTSENSE), fixed 1.6V VDD threshold, and SENSE input for monitoring auxiliary voltages down to 0.551V. It delivers 1.2μA typical supply current, ±0.75% trip-point accuracy, and 130ms power-on reset delay - enabling reliable power sequencing in battery-powered microcontroller systems.

For engineers reviewing the TPS3106E16DBVTG4 datasheet, TPS3106E16DBVTG4 pinout, TPS3106E16DBVTG4 application, or TPS3106E16DBVTG4 equivalent, key selection criteria include its open-drain dual-reset architecture, –40°C to 125°C operating range, 0.4V minimum VDD start-up capability, and compatibility with low-voltage DSPs and portable equipment requiring precise, low-power supervision.

Technical Context

The TPS3106E16DBVTG4 implements a dual-comparator supervisory architecture: one internal comparator monitors VDD against a factory-trimmed 1.6V threshold (VIT– = 1.523V typ at 25°C, ±0.75% accuracy), while a second compares the SENSE pin to a 0.551V reference. Both comparators feed independent open-drain reset outputs - RSTVDD (active-low, VDD-monitored) and RSTSENSE (active-low, SENSE-monitored).

It integrates a manual reset (MR) input with internal 100kΩ pullup, supports operation from 0.9V to 3.6V supply, and guarantees defined RESET behavior down to VDD = 0.4V. The device uses hysteresis (30mV for 1.6V threshold) to prevent chatter during threshold crossing and features propagation delays under 40μs for both VDD and SENSE inputs.

Key Specifications

Pinout & Package

TPS3106E16DBVTG4 is housed in a 6-pin SOT-23 (DBV) package measuring 2.90mm × 2.80mm, optimized for space-constrained PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervision applications.

Compared with TPS3106K33DBVR and TPS3808G16DBVR, the TPS3106E16DBVTG4 uniquely combines factory-trimmed 1.6V accuracy, dual open-drain reset outputs, and sub-2μA quiescent current - making it the only drop-in solution for space- and power-constrained 1.6V microcontroller systems requiring independent auxiliary rail monitoring.

Availability

TPS3106E16DBVTG4 is available at Aetrix Electronics and suitable for battery-powered medical devices, industrial sensor nodes, portable instrumentation, and automotive body-control modules requiring stable component supply across extended temperature ranges.

Supply support for TPS3106E16DBVTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in power management, signal chain, and high-reliability ICs.

The TPS31xx family is designed specifically for low-power, high-accuracy voltage supervision in battery-operated and thermally demanding systems - emphasizing ultralow IQ, wide temperature operation, and dual-rail monitoring capability.

FAQ

What is the exact VDD threshold voltage of the TPS3106E16DBVTG4?

The TPS3106E16DBVTG4 has a factory-trimmed negative-going VDD threshold voltage (VIT–) of 1.523V (typical) at 25°C, with guaranteed limits of 1.512V (min) and 1.534V (max). Over the full –40°C to 125°C range, the threshold remains within 1.462V to 1.584V, maintaining ±0.75% accuracy relative to nominal 1.6V.

Does the TPS3106E16DBVTG4 support monitoring a 3.3V auxiliary rail?

Yes, the TPS3106E16DBVTG4 can monitor a 3.3V auxiliary rail using its SENSE input. Since the internal SENSE comparator threshold is fixed at 0.551V, a resistor divider (e.g., 5.62MΩ + 1MΩ) scales the 3.3V rail to ~0.5V at SENSE. When the rail drops below ~3.0V, the divided voltage falls below 0.551V, asserting RSTSENSE - enabling precise undervoltage detection without additional ICs.

What is the function of the MR pin on the TPS3106E16DBVTG4?

The MR (manual reset) pin on the TPS3106E16DBVTG4 is an active-low input that forces both RSTVDD and RSTSENSE outputs low when pulled to GND. Reset remains asserted for the full 130ms timeout period after MR returns high. With an internal 100kΩ pullup, MR can be left floating if unused, or driven by a microcontroller GPIO or momentary switch for system-level reset initiation.

Can the TPS3106E16DBVTG4 operate from a 0.9V supply?

Yes, the TPS3106E16DBVTG4 is fully specified to operate from 0.9V to 3.6V. At 0.9V, it maintains functional reset assertion on both VDD and SENSE inputs, with supply current rising to 3μA (max) in the sub-threshold region. Its ability to assert valid RESET down to VDD = 0.4V ensures robust behavior during deep brownout conditions common in single-cell Li-ion or alkaline systems.

How does the TPS3106E16DBVTG4 differ from the TPS3103 series?

The TPS3106E16DBVTG4 differs from the TPS3103 series by replacing the PFI/PFO power-fail interface with a SENSE/RSTSENSE auxiliary monitoring channel. While both share 1.2μA IQ, 130ms delay, and open-drain outputs, the TPS3106E16DBVTG4 enables independent reset signaling for secondary rails (e.g., analog sensors or communication interfaces), whereas the TPS3103 provides early power-fail warning on a dedicated PFO pin.